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High-Speed USB Host Subsystem
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Table 22-81. Register Call Summary for Register ULPI_PRODUCT_ID_HI_i
High-Speed USB Host Subsystem
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High-Speed USB Host Subsystem Register Summary
Table 22-82. ULPI_FUNCTION_CTRL_i
Address Offset
0x0000 0004 + (0x100 * i)
Index
i = 0 to 2
Physical Address
0x4806 2804 + (0x100 * i)
Instance
USBTLL
Description
Controls UTMI function settings of the PHY. Read/Write address.
Type
RW
7
6
5
4
3
2
1
0
RESERVED
SUSPENDM
RESET
OPMODE
TERMSELECT
XCVRSELECT
Bits
Field Name
Description
Type
Reset
7
RESERVED
Reserved
R
0x0
6
SUSPENDM
Active low PHY suspend: Puts the ULPI bus in Low
RW
0x1
Power Mode. Automatically set back to 1 upon Low
Power Mode exit.
0x0: PHY is in low-power mode
0x1: PHY is not in low-power mode
5
RESET
Active high UTMI transceiver reset. Autocleared.
RW
0x0
Does not reset the ULPI interface or ULPI register set.
0x0: No ongoing reset/ no action
0x1: Ongoing reset/apply reset
4:3
OPMODE
Select the required bit encoding style during transmit
RW
0x0
0x0: Normal operation
0x1: Non-driving
0x2: Disable bit-stuff and NRZI encoding
0x3: Reserved
2
TERMSELECT
Controls the internal 1.5Kohms pull-up resistor and
RW
0x0
45ohms HS terminations. Control over bus resistors
changes depending on XcvrSelect, OpMode, DpPulldown
and DmPulldown.
0x0: HS termination enabled (other conditions)
0x1: FS termination enabled (other conditions)
1:0
XCVRSELECT
Select the required transceiver speed.
RW
0x1
0x0: Enable HS transceiver
0x1: Enable FS transceiver
0x2: Enable LS transceiver
0x3: Enable FS transceiver for LS packets (automatic FS
preamble pre-pending)
Table 22-83. Register Call Summary for Register ULPI_FUNCTION_CTRL_i
High-Speed USB Host Subsystem
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High-Speed USB Host Subsystem Register Summary
3298
High-Speed USB Host Subsystem and High-Speed USB OTG Controller
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated